Combined type-writing and computing machine.



F. A. HART. COMBINED TYPE WRITING AND COMPUTING MACHINE.

n I APPLICATION FILED IAN I5, IQI. v 1,281,362. Patented Oct. 15, 1918.

. 4 SHEETS-yan I.

r. A. HARI. COMBINED TYPE WRITING AND COMPUTING MACHINE.

l APPLICATION FILED IAN. I5. 1917.

1,281,362. vPatented (m15, 1918.

4 SHEETS-SHEET 2.

l F. A. HART. COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED JAN. I5. |911. 1,281,362. Patented 06u15, 1918.

4 SHEETS-SHEET 3.

Mfneases. Mia/Mz r. A. HART.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED IAN. I5. 1911. 1,281,362. Patented 00u15, 1918.

e original appuation mea March 13,1914,

" UNITED STATES PATENT GFFICE- FREI)EIR'ICKl A. HART, OF NEWARK, NEW JERSEY, ASSIGNOB TO UNDEBWOOD `GOM.-

I'UTINGf.MACHINE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK;

COMBINED TYPE-WRITING Np oMrUrINeMA-CHINE.

To all whom t may concern.'

Beit known that I, FREDERICK HAR'T, a citizen of the United States, res1d1ng 1n Newark, in the county of Essex and Statey of New Jersey, have -invented certain new and useful Improvements in Combined Type-Writing and Computing Machines, of which the following is a specification.

This invention relates to typewriting ma-r is` illustrated, the numeral keys operate f through suitable mechanism to set up pins connected to rack bars which, when a num-- ber has-been written, are actuated by a general operator, to run up the number on the computing i wheels. Thel general operator may be driven by an electric motor connected thereto through suitable transmission gear-` ing comprising clutch members adapted to.

be connected by. a lclutch shifter which also operates to establish a circuitfor the motor so that thegeneral operator is driven through one cycle, the clutch members being then automatically disen aged to disconnect thegeneral operator rom the motor.

In accordance with the presentinvention, the motor may also be used -for \-ret.urning thel carriage, and for this purpose, is connected through suitable gearing also comprising a clutch to drivev-the'carriage; a separate switch being utilized to close the motor 4circuit rfor the carriage return. Means isprovided for automatically actuating the said clutch Kshifter to connect the motor with thev generalvoperator a to close the `motori` Y circuit as the carriage completes its forward' travel; means also-being provided for actuating v the clutch between the carriage and the motor wheny the motorstarts, so that the carriage is returned by kthe motor and vthe general operator actuated concomitantly. A manual key may also be provided to close Athe switch for the motor and operate the clutch between the motor and carriage .forl

returning kthe latter to any intermediate positionv i i Specication of Letters Patent.

Serial-No. 824,4129. Divided and this A1917'. Seriana. 142,361.

'Patented 00u15, 1918. application led .T anuaryY lo,

' The electric motor is connected through suitable gearing, including a clutch, to a pinionrunning in mesh with a rack on thecarriage for-driving the latter. uring the forward travel of the carriage, the motor may remain at rest, and as the carriage comto, cams operated by an arm on the carriage to effect the opening and Jclosingof said clutch at the beginning and completion of the. returntravel of the carriage.' The left hand margin stop is adjustable along a rack bar, which may be swung downward by an arm on the carriage striking a cam connect-A- ed to said stop, and thereby 'swing forward a depending arm connected to saidl rack'. Said depending arm moves forward a locking bar to lock thenumeral keys, and also moves a latch into operative position vto effeet the operation of said clutch by the following means. Said latch is vibrated by means of a cam rotated by the motor, so

that -when the latch is moved to said operative position, its vibratory movement is transmitted to a clutch shifting lever to Vconnect the .clutch members, and/ thereby connect the carriage 'to the motor. The clutch is 4therefore operated by power supplied directly by the motor.` Connected to the right hand margin stop for adjustment therewith is a cam operated by the carriage at the completion of the return movement, and operable through suitable connections to release the clutch.

The switch for closing themotor circuit as the carriage 'is completing its `forward movement, is connected withjthe locking bar,

'which latter, whenmoved forward,- as above stated, operates a bell crank which shifts the switch lever to'position to closethe circuit and 'th'usstart the motor, thereby rotating the. carriage-returning gearing. and- -closing the carriage clutch.v To maintain the switch lever in this position and thereby keep' the motor circuit closedlong-enough to. `permit thefreturn of the carriage, the

rsaid switch lever is automatically engaged by an armwn la 4Afriction ring on the spring drumA which propels the carriage in letterfeed direction. When the carriage comy mences its return, this arm on said ring is brought into contact with the switch lever so as to hold it in position to close the switch. Said friction ring may also operate an arm or projection thereon, into position to lock nected to operate said switch lever to close the motor circuit, and may also `actuate the said latch for e'ecting the operation of the clutch between the motor and the carriage'. Said manual key may also operate the locking bar to lock the numeral keys.

This application is a division of myA applicationNo. 824,429, filed March 13, 1914 (now patent No., 1,238,908).

v Other features and advantages will .hereinafter appear.

In the accompanying drawings which illustrate one form of my-invention as applied to an Underwood-Hanson typewriting and computing machine,

Figure 1 1s apart sectional side elevation of the combined typewriting and computingmachine.

Fig. 2 is a detail View of the switch members associated with the transmission mechanism.

Fig. 3 is a sectional view of the junction box showing the connections between the electric mains and the motor.

F ig. 4 is a perspective View of the right4 hand margin stop and associated mechanism.

Fig. 5 is a sectional side elevation view of the typewriting machine:

Fig. 6 is a view similar to Fig. 4 but showing the left hand margin stop and associated parts.

Fig. 7 is a detail view of the clutch releasing trip connected to the right hand margin stop.

Fig. 8 is a rear elevation View of the carriage drum and the means controlled thereby for maintaining the motor circuit closed during the return 'of the carriage, also of the means for preventing operation of the tabulating mechanism during the carriage return.

Fig. 9 is a detail View of the clutch between the carriage and the motor, and associated parts.

Fig. 10 is a perspective view of the clutch and operating mechanism therefor.

Fig. 11 is a diagrammatic view of thev electric circuits.

Fig. 12 is-a perspective View of a switch and operating mechanism therefor.

Fig. 13 is a rear elevation view partly in section of the combined typewriting and computing machine..

The letter keys 1 and the numeral keys 2 are connected to key levers 3 and 4, fulcrumed at 5 and connected through .bell

cranks G, to the type bars 7 on a fulcrum rod 8. When a key is depressed, the corresponding type bar is swung upwardly and and is mounted on a carriage 12 which travels on front and rear guidel rails 13 and 14 respectively. Rollers 13a and 13b on the carriage run respectively on the rail 13 and theunder face of the scale supporting bar 13c` of the machine frame, The roll 15 on the platen frame runs on a shiftl rail 1G shiftableV up and down by the usual mechanism to move the platen to upper and lower case positions. The carriage is driven in letterfeed direction by a spring motor 17 connected through a draw band 1.8 to the carriage. The letter-feed movement of the carriage may be controlled by the usual letterfeed mechanism, (Fig. 1), comprising escapement dogs 18a coperating with an escapement wheel 19, said dogs actuated by a universal bar 20,1operated by heels 20a on the type bars. The operation of the type bars permits a step-by-step rotation of a pinion 2l connected to the escapement wheel 19, said pinion running in mesh with the carriage rack 22, whereby a letter-feed travel of the carriage is effected.

The tabulating mechanism may comprise keys 23 on levers 24, the latter fulcrumed `at 25 and having their rear ends extending beneath vertical plunger 26, which when the keys 23 are depressed, are projected upward into the path of column stops 69 on a rack bar 27 on the carriage.

An electric motor M is provided for automatically returnoing the carriage and for operating the general operator vof the computing mechanism. The gearing for driving the carriage from the motor comprises a pulley 28 fixed to the motor shaft 29 (Fig.

13), and connected through a belt 30 to a l sheave 31 on a shaft 32, to which shaft 32 is also secured a sheave 33 connected through a belt 3 4 to] a sheave 35 on a clutch shaft 36. Fixed to the'shaft 36, Figs. 5 and 9,

'is a member 37 of a clutch which also comprises a member 38 loose on said shaft, and shiftable into and out of engagement with the fixed member 37. Fixed to the shiftable member 38 is a pinion 39 in mesh with a rack 40 o n the carriage for returning the carriage and operating the line-spacing lopened when the return movement of the carriage is completed, the opening of the clutch being controlledby the right hand rack 43 coperating with a pivoted dog on.

the stop, said dog actuated by a finger lever 44.I The rack bar 43 is pivoted by .means of arms 45 at the ends of'the rack bar to rock on the shaft 42 as a fulcrum. TheV rack bar 43 is held up in its normal position by a coil spring 46, Fig. 4. As the carriage approaches the limit of its forward movement determined by the position of the stop 41, an arm 47, Fig. 6, on the carri-age may engage a cam 48 and depress the rack bar sufficiently to operate the signal'bell through the usual mechanism, not shown.

43, andv further depresses said rack bar.l

This movement of the rack bar swings forward a depending arm 54 bearing at its lower end against a lug 55 connectedA to a universal locking bar 56, so that said'bar is carried forward beneath the hooks 57 on the numeral key levers 4, and locks said levers. The locking bar 56 during its initial forward movement operates, through a link 58 hooked at its forward end on the locking bar, and is pivoted at its opposite end to a latch lever 59, to move said lever into posi tion to effect the closing of the clutch 37,38.

AsV the carriage completes its forward movement, the circuit for the electric motor M is closed by means about to be described,

so that the motor is running, and the fixed clutch member 37 is therefore rotating at this time. To effect this object, the bar 56 is so disposed as to rest in a longitudinal Seat or recess 123, formed in the upper face of a rearwardly extending bar 123, (Figs. 5 and 9), which bar is connected through a coil spring 124 to a bell crank 125 pivot-ed latter depressing the switch lever 99 andl at 126. (Fig. 12.) one arm of this beu crank projects over an extension of a switch lever 99, pivoted at .100 to ajalfconductor 102- and adapted to strikeagainst'a contactlOl.-

on a second conductor 103, so as to electrically connect said conductors and thereby close the motor circuit, said switch lever' .being normally held in open position, however, by means of a controlling spring 107. Bar 56 is normally in Contact with the shoulder formed by the front wall of seat 1238L and in consequence when said bar 56 'is' moved forward. as above described, the bar 123 will likewise be forced forward and will, in turn, actuate bell crank 125, the

closing the motor circuit-. When said circuit is closed, the motor will be started, and

When the 4carriage has about completed its forwardv will rotate the clutch shaft 36 through the intermediary of the belt gearing, previously mentioned.

The rear face of the clutch member 37 is formed with a cam, 60, (Fig. 9) against which bears the upper end of a bell crank v 61 on the arm 61a. The bell crank lever 61u therefore, is vibrated bythe rotating cam 60, being held against the cam by a spring 60a (Fig. 10), and imparts a vertical reciprof eating motion to the latch 59 pivotedon the arm 63. The upper end of the latch' is thus vibrated in front of the horizontal .arm of a bell crank lever 64 pivoted Kat' 65 to the stationary bracket `66, the latch 59 being in position to clear said bell crank arm 64 when the motor is started. When, however, the carriage, at the completion of its forward run, operates the cam on the left hand 'margin stop, as above described, to move the locking bar 56 forward, the link 58 draws the upper end of the latch 59 against the bell crank 64, and as the lat'ch is carried downward by the vibrating lever 63, it engages beneath the bell crank 64 so that when the arm 63 again rises, the bell crank 64 is swung about its pivot 650, and a knob 67 on the upper end of the bell crank 64 and which runs in an annular groove 68' in the hub of the pinion 39, carries said pinion rearwardly .and` connects the clutch members 38, 37. The first part of the rightward movement of the horizontal bar 123, at Fig. 9,serves to swing down the bell crank 125 vto close the circuit.. Duringl the continued tio is permitted by reason of theY yielding connection 124 between said link 123 and the bell crank 125, the link 58 (which is also connected tothe frame 129, 56, moved by the depending arm 54) swings the lever 59 far enough to `enable ths'tip thereof to get under theclutch-closing arm 64 to rock the clutch closed at 37, 38, as shown. It

will be understood that the closing of the circuit at 125 causes the motor to start and with the starting of vthe motor 'a pulley 35 is turned together with the cam 60, which cam 60 rock-s the arm 61a. Arm ,61a through spring 61b andstop 61f moves the arm 63, so that the lever 59 is jigged'up and down, and when itis first brought into the down position, it is swung under the'clutch-closing arm 64 and moves lsaid arm to clutch-closing position. It will be noted that the clutch member 37, whose cam 60 controls the bell crank 61 which, in turn, controls the bell crank 64 that shifts the loosel clutch member 38, is fixed to the-clutch shaft-36 to Arotate therewith, and since said clutch shaftl is itself driven from the electric motor, it results that the power by which the clutch is thrown in, is supplied directly from the electric motor. The pinion 39 is thusA connected to the motor and drives the rack bar 40 to return the carriage. The line-space mechanism may also be operated automatically when the carriage is returned by any approved mechanism. j

The means for .closing the motor'circuit to actuate the hereinafter-mentioned general operator of the computing mechanism will now be described, but it is to be understood, for reasons subsequently explained, that such closing of the circuit does not effect return of the carriage; .and is independent of the closing effected bythe actuation of the switch 99. A stop 69, 5 and 13,. which is one of Va series mounted on the rack bar, 27, is provided with a tappet in to the path of which projects a cam` lug 71 on a lever 72 Y pivoted intermediate itsv ends, each stop be,- ing adjustable along the rack and preferably positioned to engage the lug 71 upon, or substantially upon, the operation of a key in the units column of a computing zone. The stop 69 shown is positioned-to engage said lug shortly before, or just as', the carriage completes its forward travel through a computing zone. The lever 72 operates through a pull link 73 to rotate a bell crank 7 4, to which is connected one end of a laterally extending bar 75, the other end of which extends overa lever 76, Fig. 1, and when the'bar 75 is thus retracted and the Alever 76 released, a spring 77 swings said lever about its fulcrum 78, and by means of a pin 79 depresses' a rod 80. Said rod rotates a lever 81 about its fulcrum 82, and thereby lifts a stop pin 83 from engagement with a lug 84a provided on the metallic inner member of a switch ydisk 92, said member fitting loosely on' a cup member 87 which is fixed on a shaft 88. This stop pin, when so withdrawn, releases a clutch-operating ring 84 which operates to rotate disk 92 into position to establish an electric circuit for the motor, and also operates a clutch to connect the motor to the mechanism for driving the general operator. The clutch-controlling ring 84, when released as just described, is rotated-by a spring 85 in 'the direction of the arrow, Fig. 1, to carry a roller 86 upward and jam it between the cam surface of the rim of the cup member 87 and the hub.

of a worm gear 89 loose on shaft the lateral projection with'which said r1ng.1s provided bearing against lug 84 and thereby rotating disk 92, as will be understood.`

The worm gear 89 is thus connected to the shaft 88, said gear being driven by the Worm 90 on ,the motor shaft 29. The metallic outer member or disk 92 (See Figs. 2 'and 13) is connected to, butinsulated from,the inner member thereof, and carries contact `lugs y91, which lugs 91, as the clutch ring and disk are rotated by the spring 85, engage spring contact arms 93, thereby electrically connecting said arms, and establishing a circuit 70 through the motor M. The motor is thereby started. Y n

The motor operates through the worm gearing 90, 89 to rotatethe shaft 88 which is connected to a crank, (not shown), to 75 reciprocate `a slide 94 connected to the general operatorv 95 of the computing mechanism. Said slide is given one complete reciprocation and actuates the'general operator through one complete cycle by the time 80 i carriage, the following means is provided.

The carriage return drum 17 (see Figs. 8 and' 13), carries a ring 96 which may be fric- 9'0 tionally held in place by springs 97 secured to the drum, and said ring is provided with an arm v98 depending into-position to contact with the switch lever 99. Normally the arm 98 is free from the switch lever, but as soon, 95 as the carriage vcommences its return movement, the drum 17 is rotated in a counterclock-wise direction, Fig. 8, and the arm 98 engages the switch lever which has previously been actuated by the bell crank 125, 100 as will be understood, and prevents it from moving backward. The switch 99 is thus held closed during the return movement of the carriage. By reference to the diagrammatic view of the motor circuits, Fig. 1l, it 105 "will be seen that the motor circuit is com- .when the carriage commences its return movement, is carried into the path of an arm 105 ona'roclshaft 106, which may carry a universal locking bar 106a extending into the path of shoulders or projections on the plunger stops 26, whereby said stops are locked and cannot be operated during the return of the carriage.

When the carriage has been returned, and

Vis released from the returning means, the

drum 17 invariably pulls the carriage ashort 125 distance forward before the escapement dogs 18"L are in position to hold the carriage. During this slight forward rotation of the carriage drum', the ring 96 is returned to the position shown'in fulllines in Fig. I13, 130I opened by its, spring 107. The electric motor M may then remain at rest during the forward travel of the carriage.

As the carriage has about completed its return movement, the clutch 37 38 is opened by the following mechanism to disconnect the carriage from the motor: Referring -to Fig. 4, the right hand margin stop 108 is mounted on the shaft 42 for adjustment longitudinally ofthe carriage and is held in ad,- justed position by a rack 109 with which engages a awl pivoted to the margin stop and operated) by ai finger piece 110. Connected to the margin stop for adjustment therewith, is an arm 111 splined on the rock shaft 42, and carrying a cam 112 in the pathof the arm 47 on the carriage, Fig. 6. The arm 111 may be connected to the stop 108 by means of a lip 113 on the stop entering a nptch in said .arm, such connection Y permitting the arm to rock with the shaft 42. As the carriage nears t-he endof its return movement, the arm 47 strikes the cam 112 and rocks the swinging forwardly ya dependingA arm 114 fixed to the shaft 42.'r This movement of the arm 114 moves forward a link 115 connects Fig. positiomthereby separating the clutch members 38, 37 andA disconnecting the carriagefiom the motor.

The carriage may be returned from any` intermediate position by depressing a. key 117 connected through a' pin 118 working in ,a slot 119 in the machine frame, to an arm 120 fixed to a rock shaft 121, to which is also lfixedan upwardl extending rock arm 122. To this arm' 122 1s pivoted the front endof the Vlink or slide gbar 123, which latter, as previously stated, is connected `through spring124`to bell crank 125. Spring arm 127 is secured to the rock shaft 121 so that when the Ykey 117 is depressed, the rod 56 is t, carried lforward to lock the numeral keys,

`l pandtthe bar 123 is, drawn forward and through thel bell 4crank 125, operates, the

switch 99. t'o close'the motor circuit. The bar 56 is moved away from key-locking positionby the usual spring (not shown). The.

coil spring 124 -is then extendedby the continued forward movementof the bar 123 as the key 117 is further depressed to lock-the numeral keyslas above noted.v The'forward movement of the locking-bar 56 is transmitted through the-link 58 to the latch 59, asheretoforeexplained, to effect the closing of the clutch 37, 38. The arm 1'27`being elastic or yielding permits the' key 117 to be depressed and the motor circuit established independently of the movement of the locking bar 56, which lmay be prevented from mov@ arm 111 and with it, the shaft 42, thereby ing forward on account of the upper end of the latch 59 bearing against the forward e'nd of the bell crank 64, as shown in F ig. 10, until/the arm 63 is set in motion by the rotating clutch member 37, and the latchl 59 carried downward. to position to snap beneath" vthe bell crank 64 as in F ig. 9, lt will thus be seen that the key 117 wheny depressed, first closes the switch/to sta-rt the motor, and then operates to lock the numeral keys and sets the latch 59 so that theclutch` is shifted by the motor. VVhen-the key 117 is released, it is returned by a coil spring 118, Fig, 9, which may also return the bar 123 andv permit the switch 99 to open. It will be noted ing through the cam on the marginstop.

This arrangementprovides ample power for operating the clutch and is much more reliablel thanan arrangement in which'` the movement of the' carriageis relied on to 01perate the clutch.` l The general operator 95 of the computing.

mechanism is manually controlled lby a key 130, Fig. 1, connected toa lever 131 extending over the -lever '81 'and operable when the key 130 is depressed toactuate said lever and withdraw the' holding pin 83, thereby per- 4that the shiftable clutch member 38 is aotu-v mitting the clutch member 84 and switch disk 92 to operate as heretofore described to closethe motor circuit, and also connect the motor throughthe worm gearing to the driving slide 94 to reciprocate the latter, and

thereby actuate the general operator through one cycle.

The numeral keys 2 are provided with pendants or thrust links 132 each adapted to strike an arm v133 on a, rocker 134, and cause the latter through a'linkage 135 to set up a pin 136. on a rackl bar 137, thus moving said .p-in'into .the path-0f the general operator;

The bars 137 are positioned bythe operation of the numeral keys to be set by Aselector dogs 138 on the carriage.- Each .selector dog is provided with a tappet 139,Wl1ich during the travel of 'the carriage, comes successively into'engagement with the individuals of a series -of jacks .140. These jacks depress' thrust links 141 and through levers142 and transposition mechanism 142, raise the rack l bars 137 to bring the pins 136 thereon into position to be depressed by the pin-setting linkages. r The specific form of computing mechanism does not in itself form a part of the present invention, and'A need not be set fortlrfurther in detail.

Thetypewriting machine frame 144 may be removably supported on the casing 145 which contains the computing mechanism,

said casing in turn removably connected to the-framework 146 which supports the motor v and transmission gearing. yTo permit the r0- moral ofthe typewriting machine, the lower ends of the electrical contact bars 102, 103 are bent forward asshown in Figs. 5 and 12 and rest on the contact bars 147 and 148 in the casing 145, said bars 147 and 148 in turn bearing on the conductors 149 and 150. The conductors 149 and 150 are respectively connected to binding posts 161 and 16() extending into a junction box 151. Electric `current from any suitable source is supplied through the main cable 152 comprising a conductor 16:2 connected with the binding post 160, and a conductor 163 connected to an intermediate binding post 164. A cable 165 extending from the junction box 151 comprises conductors 166 and 167 connected to the binding' posts 164 and 161 respectively. These conductors 166 and 167 may be connected to the motor terminals. A cable 168 leading from cable 165 may carry a wire connecting conductor 167 of the one terminal 93 of the transmission clutch switch, the other termina-l of said switch being connected through a conductor 169 in a cable 169EL to the binding post 160.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: l..

1.l In a combined typewriting and computing machine, the combination with a traveling typewriter carriage, of an electric motor for returning said carriage; computing mechanism, gearing between the motor and said computing mechanism, comprising a clutch, a device to actuate Saidclutch, and operatively connect tlie motor to the computing mechanism, means operated by the actuation of said clutch to establish a circuit for the motor, means to release said clutch when the computing mechanism has completed a cycle of operations, and means to automatically maintain the motor circuit independently of said clutch until said typewriter carriage has been returned by said motor.

2. In a combined typewritingeand computing machine, vthe combination with va traveling typewriter carriage, of an electricmotor for returning said. cariage, computing mechanism comprising a general operator, gearing between the motor and general operator comprising a clutch, Ywith a clutch shifter, means operated by the carriage to effect the operation of the clutch shifter, and thereby connect the motor to drive the gen-V eral operator, a switch Vactuated by the clutch shifter to establish a circuit for the motor,

and a second switch controlled by the return movement of said carriage for automaticallymaintaining the motor circuit independei'itly of said first-named switch.

a combined typewr'iting and coin- ,puting machine, the combination, with a traveling typewriter carriage, of an electric motor for returning said carriage, gearing between said motor and carriage comprising a clutch, computing mechanism, and means, under control of the said carriage, for both automatically operating said computing mechanism and also operating said clutch and connecting the motor to the carriage for returning the latter.

4. In a combined typewriti-ng and computing machine, the combination with a traveling typewriter carriage, and an electric niotor, of gearing between the'inotor and said carriage comprising a clutch, computing mechanism, gearingbetween the motor and computing mechanism comprising a clutch, and means for automatically actuating said clutches and connecting the s^aid carriage and computing mechanism to be driven by the motor.

5. In a combined typewriting and computing machine, the combination with a travcling typewriter carriage,' and an electric `motor,'of gearing between the motor and said carriage comprising a clutch, computing mechanism, gearing between' the motor and computing mechanism comprising a clutch, means for automatically actuating said clutches and connecting the said carriage and computing niechanlsm to be driven by the motor, a switch automatically oper-h ated to establish a circuit for the motor,

erator, of an electric motor, gearing between said motor and enera-l operator comprising a clutch, a clutc shifter, a pin for holding the clutch shifter in inoperative' positioii,.

a traveling typewriter. carriage, means actuated thereby for withdrawing said pin and permitting the clutch shifter to connect the clutch members and thereby effect an' operatioh ofthe general operator, means to return said pin into the path of the vclutch shifter to release the clutch when the geny eral operator has completed a cycle of 0perations, and a switch actuated by said clutch shifter to establish a circuit for the motor.

7. In a combined typewriting andconiputing machine, the combination withtypewriting mechanism includingl arutraveling carriage, and computing mechanismzcomprising a general operator, of' an electric motor, gearing between .said motor and general .operator comprising'a clutch, a clutch shifter, a pinmfor holding the clutch shifter inv inoperative position, means actuated by 'said typewriter carriage for A. withdrawing -said pin and permitting the clutch shifter for automatically maintaining the motor circuit during the return travel of the carriage independently of said switch. Y v

8. In acombined typewriting and computing machine, the combination with computing mechanism, and typewriting mechanism includin a traveling carriage of an .electric motor. or returnino the carriage, a

manual key', means operate `thereby for effecting a driving connection between the carriage andmotor, a second manual key,

and means operated by said second key to cause said motor to drive the computing mechanism.

`9. In a combined typewriting and clom-l puting machine, the combination with computing mechanism and a traveling typewriter carriage, of a motor, connections from the motor for returning the carriage, separate connections from the motor for actuating said computing mechanism, and means operated by said carriage for controlling both of said connections.

10. In a combined typewriting and com-- puting machine, the combination with computing mechanism and a traveling typewriter carriage, of a motor, I connections;

from themotor for returning the carriage,

' separate connections from the motor for actuating said computing mechanism, and means operated by said carriage for controlling both of said connections either separately or concomitantly.

11,. In a combined typewriting and computing machine, the combination with computing mechanism and a traveling typewriter carriage, of a motor, connections from the motor forl returning the carriage, separate connections from the motor for actuating said computing mechanism, a margin-gage carried by said carriage for controlling the carriage-return connections, and means also carried by the` carriage for controlling the computin -mechanism connections independently o margin-gage.

12. In a combined typewrltmg and comthe position of said puting machine, the combination with computing mechanism and a traveling .Y typewriter carriage, of a motor, connections from the motor for returning the carriage,

separate connections from the motor for actuating said computin mechanlsm, a Inargin-gage carried by sai carriage for controlling the carriage-return connections, and adjustable means also carried by the carriage controlling the computing mechanism-connections independently .of the position of said margin-gage, whereby said computing mechanism may bev operated at `different column positions of said carriage, dependent upon the adjustment of said means.

13. In a combined typewriting and computing machine, the combination with computing mechanism and a traveling typewriter carriage, of a motor, connections from the motor for returning the carriage, separate connections from the motor for actuating said computing mechanism, a lefthand margin-gage for controlling the carriage-return connections, a right-hand margin-gage .for controlling the breaking of said connections, and means' carried by the typewriter carriage forcontrolling the computing-mechanism connections independently of either margin-gage Y 14. In a combined typewriting and computing machine, the combination with computing mechanism and a traveling typewriter carriage, of a motor, connections from the motor for returning the carriage,l

separate connections from the' motor for actuating said computmg mechanism, a lefthandv margin-gage for controllingthecar-y riage-return connections, a right-hand margin-gage for controlling the breaking of said connections, and a tabulator-stop carried by the carriage for controlling the computing-mechanism connections independently of either margin-gage.

15. In a combined typewriting and computing machine, the combination with computing Vmechanism and a traveling type- Ywriter carriage, of a motor, connections from the motor to said carriage for returnlng they same, including an electric-circuit,

' connections from the motor to said computing mechanism independent of said circuit, and means operated by the carriage for-'controlling said circuit and also the computingmechanism connections.

16.' In a. combined typewriting and computing machine, the combination with computing mechanism and a traveling typewriter carriage, of a motor, connections from the motor to said carriage for returning the said motor to said computing mechanism, in-

cluding 'a circuit independent of said first circuit, and means separately adjustable along said carriage for controlling said circuits, respectively.

18. In a combined typewriting andv computing machine, the combination with computing mechanism and a traveling typewriter carriage, of a motor, connections from said motor to said carriage for returning the Same, connections from said motor to said computing mechanism, including a circuit, and means controlled by said carriagefor closing said circuit a plurality of times during a single traverse of said carriage and for controlling said carriage-return connections at the completion of its traverse.

19. In a combined typewriting and computing machine, the combination with computing mechanism and a traveling typewriter carriage, of a motor for driving said computing mechanism and returning said carriage, a circuit for said motor, a second circuit for said motor, means controlled by said carriage for closing both circuits at the 4same or at different times to enable said motor-to return said carriage and actuate said computing mechanism, and means for maintaining both circuits closed until' said motor has completed its work. l 20. In a combined typewriting and computing machine, the combination with computing mechanism and a traveling typewriter carriage, ot"I a motor for driving said computing mechanism and returning said carriage, a circuit for said motor, a second returning the typewriter carriage carried by trical connections being automatically sepa-4 rabl'e so that said connections may be rendered operative by the mere placing of one machine frame upon the other.

22.- In a combined typewriting and com-l puting machine, the combination with computing mechanism, and typewriting mechanism lncludin a carriage, of a framefor said typewritlng mechanism, a frame 'for said computing mechanism, mechanism for returning the typewriter carriage carried by said typewriter frame, mechanism for actuating the computing mechanism carried by said computing frame, a motor for driving both said actuating mechanism and said returning mechanism, also carried by said computing frame, and electrical connections controlled by said typewriter carriage and closing V`the circuit to said motor, said electrical connections being separable and including s ring-fingers carried by one of lsaid machine rames, and a contact-plate carried by the other 'of said -frames to be engaged by said spring-fingers" when said frames are placed one upon the other.

23. In a combined typewriting and computing machine, Vthe combination with a typewriter carriage, of an electric-motor for driving said carriage in one direction, computing mechanism, a switch controlled by the carriage` for establishing a circuit for the motor and causing the latter to effect the accumulating vaction of said mechanism, a second switch set by said carriage on reaching a'v predetermined position, for returning the carriage, and means for maintaining said circuit for the motor until the carriage has been returned, independent .of the firstnamed switch.

FREDERICK A. HART. Witnesses: A s

` CATHERINE A. NEWELL, Evrrrr B. LIBBEY.` 

